Car-wheel.



UNITED STATES Patented December 8, 1903.

PATENT OEEICE.

H'ENRIK V. LOSS, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO CHARLES T.SCHOEN, OF PHILADELPHIA, PENNSYLVANIA.

CAR-WHEEL.

SPECIFICATION formingpart of Letters Patent No. 746,538, dated DecemberB. 1903. Application iiled March 7, 1902. Serial No. 97,199. (No model.)

To all whom it may concern. l

Be it known that I, HENRIK V. LOSS, a citizen of the United States,residing at Philadelphia, in the county of Philadelphia and State ofPennsylvania, have invented acertain new and useful Improvement inOar-Wheels, of which the following is a full, clear, and exactdescription.

The object of this invention is to produce in effect a wrought car-wheelin one piece and of standard dimensions and conformation.

In carrying out my invention in its preferred form I first form aVcircular blank or .ingot of cast-steel more or less approximating theshape 'of a car-wheel and of greater thickness but less diameter thanthenished wheel and then rendering the same plastic by heat form the hubby forging, as by means of a die-press, and punch the axlehole thereinand start the formation 0f thev web. The blank after this first forgingtreatment is then subjected to a further forging operation, as by meansof roller-dies, to draw out the web and form the flanged tread, and

then the thus-produced Wheel is subjected to a bending action for coningthe web or giving it the proper dish and effecting the relativearrangement of the hub, web, and tread or rim.

The invention consists of a wrought-steel wheel constructed ashereinabove described and as hereinafter more particularly set forth andclaimed.

In the accompanying drawings, illustrating l myinvention, in the severalfigures of which like parts are similarly designated, Figure 1 is aconventional blank in cross-section. Fig. 2 illustrates in cross-sectionthe result of the first operation. Fig. 3 is across-section showing thewheel as it comes from the roller-forging operation. Fig. 4 is acrosssection showing one form of finished dished wheel. Fig. 5 is across-section showing another form of finished wheel; and Fig.- 6 is aplan view of half of said wheel, Fig. 5.

I first produce, preferably by casting, a blank or in'got a of steel, ofapproximately the shape of a car-wheel and of substantially the formindicated in Fig. l, in which there is an embryotic hub b, web c, andfianged tread d. This blank is heated to a red heat or beyond, and thenby suitable means, such as a die-press, the hub e is forged, togetherwith the beginning fof the web. The axleopening g is then samedie-press. The heated blank is then subjected to the action offorging-rolls, which fserveto draw out and form the web h and theyflanged tread i, substantially as shown in Fig. 3, after which thethus-formed wheel is subjected to pressure, so as to give a dishpunched, preferably in thev thereto, as indicated in Fig. 4 orasindicated Figs. 5 and 6, both to dish it and form in the web thedepressionsj. In any case the dishing imparts a certain elasticity7 tothe wheel,

which eases the wheel in meeting irregularities on the rails and enablesit' to take up shocks, and, moreover, it serves to distribute uniformlythe pressure exerted in setting the wheel on its axle. It will beobserved also that the web joins the hub andthe rim centrallynotwithstanding the dishing, and hence the distribution of load stressesis'best maintained.

In a concurrent application for patent for hydraulic presses I haveshown an apparatus by means of which the blank of Fig. 1 may betransformed into the device of Fig. 2, and a similar press may be usedwith appropriate dies for dishing the wheel, and in another concurrentapplication for patent for machines for rolling car-wheels I have shownan apparatus by means of which the web may berdrawn and the iiangedtread of the wheel formed ,but I do not limit my invention to the use ofthese two special machines and refer to them here merely as illustratingmeans by which the invention may be practiced.

The process herein set forth is reserved as the subject of myapplication `for patent filed July 2l, 1902, Serial No. 116,439, samebeing a division hereof in accordance with the requirement of the PatentOffice.

What I claim is- 1. A onepiece, forged and rolled steel Wheel, havingthehub and approximately onea finish. fourth of the adjacent web forged,and the In testimony whereof I have hereunto set axle-hole punched, andthe remainder of the my hand this 25th day of February,A. D. 1902. weband the flanged rim 'rolled to a finish.

2. A one-piece, forged, rolled and dished HENRIK V LOSS' steel Wheel,having the hub and approximately one-fourth of the adjacent web forged,and the axle-hole punched, and the remainder ofthe web and the anged rimrolled to lo Witnesses:

CHAS. T. SCHOEN, J G. GLADING.

